HYBRIDHATCH92

for some reason i getting this code and cant figure it out why
just some back round info...i've just finshed the swap
99 hatch
00 itr swap
si harness
si ecu

problems starting at a cold start
code p0117
no vtec

when we hook the scaner up it said the water....temp 215.....intake manifold temp 188...and nothing was fluctuating so gusessing thats why i'm having problem at cold start i'v tried swapping the ect switch but i still get the same readings anybody have any idea's

ek9800

P0117 Engine Coolant Temperature (ECT) Sensor Circuit Low Input

HYBRIDHATCH92

i know that the code is sensor circuit low but how do i go about fixing it

EE_Chris

There aren't but a few wires involved - Do you have a mutli-meter?

HYBRIDHATCH92

yes i do..which wires do i check and what should the voltage be

EE_Chris

A) You would check the wires that relate to the ECT and IAT circuit - they are shown in the link I provided.

B) Since the ECT and IAT should show the same resistance when completely cold (they are the same sensor, essentially) - do that as a first step - measure their resistance with them unplugged from the main engine harness.

If that checks out, then you need to verify wiring integrity - make sure that none of the wires are shorted to ground or open. You'll also need to make sure that the wire is continuous from its connections from the sensors to the ECU.

Voltage wise, I dunno: But since they share the same electrical characteristics, they should show the same voltage when completely cold. But if the voltages aren't the same, but the sensors are alright, then you're gonna have to check your wiring for opens, shorts, and continuity.

HYBRIDHATCH92

ok thanks i'll give it a try tonight